Derivative financial instruments (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2017	Oct. 01, 2016
Not Designated as Hedging Instrument \| Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Net derivative financial instrument (loss) gain	$ 1,859	$ (9,508)
Other expenses, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative financial loss		$ 8,000

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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Amount of decrease in the fair value of derivatives recognized in the income statement.

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